Question

find the lcm of 27 and 90 .use the lcm to find their hcf

Answer 1

hcf = 27×90/lcm
lcm=27×90/hcf

hcf of 27 and 90 =9
so lcm = 27×90/9 = 270

Answer 2

$\mathfrak{dear\;user }$

$\textsf{question-Find\: the \:LCM \:of \:27 \:and \:90\:. \:Use \:the \:LCM \:to \:find \:their \:HCF. ​}$

$\mathfrak{here\:is\:the\:solution\:for \:the question }$

$\Large{ \begin{array}{c|c} \tt 3 & \sf{ 27,90} \\ \cline{1-2} \tt 3 & \sf { 9,10} \\ \cline{1-2} \tt 3 & \sf{ 3,10} \\ \cline{1-2} \tt 5 & \sf{ 1,10} \\ \cline{1-2} \tt 2 & \sf{ 1,2}\\ \cline{1-2} & \sf{ 1,1 } \end{array}}$

$lcm=2\times3\times3\times3\times5=270$

$hcf=3\times3=9$

$\mathcal{MY\:EXPECTATION\: FOR \:THIS \: ANSWER \:IS }10\:thanks\:and \:brainlist$

$\mathcal{BY \:ROSHAN\: A \:USER \: OF \: BRAINLY}$

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